N-VAR
（感情的）过分流露，倾泻，迸发
If someone expresses their emotions or ideas with effusion, they express them with more enthusiasm and for longer than is usual or expected.
例句
His employer greeted him with an effusion of relief...
他的雇主看到他大松一口气。
I did not embarrass her with my effusions.
我并没有太过热情而让她为难。